Nowhere Kingdom is an 8 page comedy-ish large multiplayer rpg about a kingdom that replaced its tyrannical leader with a host of possibly-better-but-definitely chaos-oriented demons.
The game is designed to work with audience participation, with a few players serving as councilors who propose ideas, and with everyone else serving as demons who vote on them.
It's a really neat concept, and I don't think I've seen many other games built quite this way. It also includes safety tools to shield the audience from the councilors, which is honestly a solid addition for an audience-participation improv game.
I think anyone who's interested in games as a way to entertain an audience should check this out. It's also perfectly solid as an improv exercise, or a one-shot where most of the challenge is roleplaying and acting-based rather than a function of cards/dice.